Despite flagging viewership as of late, the show makes most of its dough in syndication, which keeps its male stars -- old and new -- in the magazine's top 10. Besides syndication, most of the actors on the list have some meager box-office bucks that helped boost their totals this year.

The magazine calculates the earnings by speaking with producers, managers, agents and other individuals in the industry to figure out how much the actors made through their entertainment-related endeavors between June 2012 and June 2013, Forbes said.

Kutcher, an alum of "That '70s Show," has also been working on his film career, starring as his "hero" Steve Jobs in "Jobs," the biopic about the Apple co-founder, which was released this summer but earned only $16 million at the box office. But Kutcher's paycheck has been boosted by his passion for investing. The scruffy-faced actor has stakes in tech companies such as Airbnb, Foursquare and Path, the financial mag said.

Kutcher and his girlfriend, Mila Kunis, also made the magazine's list of top-earning couples, clinching the No. 4 spot by earning a combined $35 million between June 2012 and June 2013.

Kutcher's costars Cryer, 48, and Angus T. Jones, 20, also made the list, locking in the No. 2 and No. 7 spots respectively. Two-time Emmy winner Cryer made about $21 million, and Jones made $11 million. Jones was downgraded from series regular earlier this year after he made a video that went viral on YouTube in which he called the show "filth" and beseeched fans to stop watching it. Even though he has been replaced by Amber Tamblyn, who plays Sheen's character's long-lost daughter, he's still earning cash from the show's run in syndication.

Ray Romano, 55, also has syndication to be grateful for, even though the comedian's cash cow went off the air in 2005. The "Everybody Loves Raymond" actor came in at No. 3 on the magazine's list, earning $16 million, thanks to his sitcom's reruns, his stint as a crotchety photographer on NBC's "Parenthood" and his voiceover work in the "Ice Age" franchise.